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东北地区末次冰期的旧石器遗址的埋藏地层分为4个阶段,旧石器文化可划为3期,分别距今2.5万～0.8万年、5.0万～2.5万年和7.3万～5万年。各期的变化时间与末次冰期的两次气候强烈转变相吻合,体现了东北地区末次冰期人类适应方式的两次飞跃。前一次的飞跃原因目前还不清楚,但第二次的飞跃似与外来因素的进入有关。
The burial stratum of the Paleolithic site in the last glacial period of Northeast China is divided into four stages. The Paleolithic culture can be divided into three periods of 25,000 to 30,000 years, 50,000 to 25,000 years, and 73,000 to 50,000 years respectively. The changing period of each period coincides with the strong changes of the two climates in the last glacial period, which shows two leaps in the human adaptation mode in Northeast China in the last glacial period. The reasons for the previous leap are not yet clear, but the second leap seems to be related to the entry of external factors.